<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8">
    <title>卡片式图片</title>
    <style>
        body {
            margin: 25px;
        }

        div.polaroid {
            width: 80%;
            background-color: white;
            box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
            margin-bottom: 25px;
        }

        div.container {
            text-align: center;
            padding: 10px 20px;
        }
    </style>
</head>

<body>

    <h2>响应式卡片</h2>

    <div class="polaroid">
        <img src="images/rock600x400.jpg" alt="Norway" style="width:100%">
        <div class="container">
            <p>The Troll's tongue in Hardanger, Norway</p>
        </div>
    </div>

    <div class="polaroid">
        <img src="images/lights600x400.jpg" alt="Norway" style="width:100%">
        <div class="container">
            <p>Northern Lights in Norway</p>
        </div>
    </div>

</body>

</html>